John A Lupienski

US Patent:

7281069, Oct 9, 2007

Filed:

Aug 31, 2004

Appl. No.:

10/929779

Inventors:

Tony Turner - Foothill Ranch CA, US
John Lupienski - Phoenix AZ, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

G06F 13/42
G06F 3/00

US Classification:

710105, 710110

Abstract:

Methods and systems for extending the functionality of an embedded Universal Serial Bus (USB) transceiver interface to handle threshold shift of a USB 2. 0 bus during high-speed chirp are presented. A method for a transceiver of a host coupled by a USB 2. 0 bus to a device includes receiving a control signal, and selecting one of a first and second zero level voltage threshold according to the control signal. The first threshold is higher than the second to compensate for a shift in a zero level of the bus during high-speed chirp. In one example, the transceiver selects the first threshold when driving a reset signal, and selects the second threshold after detecting a device high-speed chirp signal. In another example, the transceiver selects the second threshold after driving a high-speed chirp sequence. In one example, the control signal includes a signal of a host controller embedded USB transceiver interface.

US Patent:

7552258, Jun 23, 2009

Filed:

Sep 28, 2007

Appl. No.:

11/905288

Inventors:

Tony Turner - Foothill Ranch CA, US
John Lupienski - Phoenix AZ, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

G06F 13/42
G06F 3/00

US Classification:

710105, 710110

Abstract:

Methods and systems for extending the functionality of an embedded Universal Serial Bus (USB) transceiver interface to handle threshold shift of a USB 2. 0 bus during high-speed chirp are presented. A method for a transceiver of a host coupled by a USB 2. 0 bus to a device includes receiving a control signal, and selecting one of a first and second zero level voltage threshold according to the control signal. The first threshold is higher than the second to compensate for a shift in a zero level of the bus during high-speed chirp. In one example, the transceiver selects the first threshold when driving a reset signal, and selects the second threshold after detecting a device high-speed chirp signal. In another example, the transceiver selects the second threshold after driving a high-speed chirp sequence. In one example, the control signal includes a signal of a host controller embedded USB transceiver interface.

US Patent:

20060036918, Feb 16, 2006

Filed:

Aug 16, 2004

Appl. No.:

10/918408

Inventors:

Tony Turner - Foothill Ranch CA, US
John Lupienski - Phoenix AZ, US

International Classification:

G11C 29/00

US Classification:

714719000

Abstract:

A multi-bit write pointer that is associated with a first clock can be converted to a single-bit write pointer. A multi-bit read pointer that is associated with a second clock can be converted to a single-bit read pointer. The first clock and the second clock are not synchronized. One or more guard bits can be associated with the single-bit write pointer and/or the single-bit read pointer. The single-bit write pointer and the single-bit read pointer can be compared. According to an embodiment, an error can be detected in response to comparing the single-bit write pointer and the single-bit read pointer.

Address:

271 Rolling Grn Ln, Elma, NY 14059

Phone:

716 652-0941

VIN:

1G4GB5ER6CF269968

Make:

BUICK

Model:

LACROSSE

Year:

2012